Legionella risk assessment in Aberdeen

Updated 7 September 2026

Aberdeen's offshore energy economy gives the city an unusual legionella profile: alongside its hotels, offices, and care homes, it has a large base of oil and gas service companies operating workshops, training centres, and accommodation blocks around the harbour and the Bridge of Don. Aberdeen Royal Infirmary anchors a substantial NHS Grampian estate, and the two universities support a significant student accommodation market. The city's granite tenements and Victorian commercial buildings have been widely converted to flats and HMOs, often with pipework altered over decades. Enforcement sits with the local authority environmental health team under the same ACOP L8 framework as the rest of Britain.

Local water supply

The mains water supplier for Aberdeen is Scottish Water (Scottish Water website). The mains supply is treated and controlled by the supplier, so your legionella duties begin where the water enters your premises. Anything downstream of the boundary stop tap (storage tanks, calorifiers, pipework, outlets) is your responsibility.

Water in the Aberdeen area is classed as Soft on the Drinking Water Inspectorate hardness scale (around 12 mg/l as CaCO₃), according to MyTapWater water quality data (single source - unverified). Harder water lays down scale inside calorifiers, cylinders, and mixing valves, and scale gives legionella a foothold while blunting temperature control, so in hard-water areas descaling and inspection belong in the written scheme of control. Check your supplier's postcode water-quality checker for the figure for your exact supply zone.

Legionnaires' disease in Scotland

The most recent Public Health Scotland surveillance report recorded 57 confirmed cases of Legionnaires' disease in Scotland in 2024, a rate of 10.4 per million residents (report published 26 August 2025).

These figures are published by Public Health Scotland, not UKHSA — UKHSA surveillance covers England and Wales only. Surveillance counts only laboratory-confirmed, reported cases, so they are a floor rather than the true total. The England and Wales picture, with the trend since 2017, is on the Legionella Data Index. The figure changes nothing about your own duties: whatever the count, a non-domestic water system in Aberdeen still needs a risk assessment, a control scheme, and the records to show the scheme is being followed.

Typical cost in Aberdeen

Legionella risk assessment costs in Aberdeen depend more on the water system than on the location. A rough guide:

• Small premises, mains-fed only, no storage: £150 to £250
• Typical office or shop with a hot water cylinder: £200 to £400
• Care home, hotel, or school with stored hot and cold water: £400 to £800
• Premises with a cooling tower or evaporative condenser: from £800, often much higher

Cooling towers drive the cost up because they are notifiable to the local authority under the Notification of Cooling Towers and Evaporative Condensers Regulations 1992, and they need quarterly sampling and extensive cleaning. Get a tailored estimate with our cost calculator.

Legionella enforcement in Scotland

Prosecutions for legionella failings are usually brought under the Health and Safety at Work etc. Act 1974, whether by the HSE, a local authority, or (in Scotland) the Crown Office and Procurator Fiscal Service. No case in our tracker is recorded in Aberdeen itself; the cases below are the most recent recorded elsewhere in Scotland, shown as regional context rather than local history. They are drawn from our legionella enforcement tracker, which records each one against its primary source:

BDL Select Operations Ltd, 2016 (Hospitality) — fined £54k. Operator of the then-Landmark Hotel in Dundee. A Pontiac fever outbreak from the leisure-club spa pool left 65 people ill (18 confirmed). The spa pool had not been fully drained, cleaned or disinfected for over two months, filter backwashing was neglected, and a failed chlorine injector let bacteria breed. Pleaded guilty on indictment to two HSWA charges and was fined £54,000 at Dundee Sheriff Court in January 2016. No deaths. Prosecuted by COPFS in Scotland.

Lanarkshire Health Board (NHS Lanarkshire), 2012 (Healthcare) — fined £24k. A 64-year-old patient at Hartwoodhill Hospital contracted Legionnaires' disease in November 2008. HSE found legionella in three water sources, two (including the shower the patient used daily) matching her strain, and established that no suitable legionella risk assessment or control scheme was in place. The patient survived. Fined £24,000 under HSWA s3(1) at Hamilton Sheriff Court in January 2012. Scottish prosecution (COPFS, HSE investigation).

The failings behind these cases are consistent: no suitable risk assessment, no written scheme of control, monitoring not carried out, or records that could not show the controls happened. The full dataset is on the enforcement tracker, and legionella fines and prosecutions explains how the courts approach sentencing.

Find a legionella risk assessor in Aberdeen

We are building a directory of qualified water hygiene assessors in Aberdeen and across the UK. In the meantime, look for assessors who:

• Work for a company registered with the Legionella Control Association (the LCA is the main UK trade body for water hygiene)
• Hold a City & Guilds or equivalent qualification in legionella risk assessment
• Can provide references from similar premises in the Aberdeen area
• Will quote against a clear scope (number of outlets, inclusion of hot and cold surveys, whether sampling is included)

Legionella testing labs covering Aberdeen

Routine temperature monitoring is done on site, but where your risk assessment or written scheme calls for water sampling, the samples go to a laboratory for culture. None of the UKAS-accredited laboratories in our directory is based in Aberdeen itself, so the nearest UKAS-accredited labs are listed below — all accept postal samples, and posted sampling is how most premises use them:

• Feedwater Laboratories (UKAS no. 2234), turnaround ~10 days, from £82.68 per sample
• Eurofins Water Hygiene Testing UK Limited (UKAS no. 9658)
• ALS Environmental (ALS Laboratories (UK) Limited) (UKAS no. 1314)

Methods, turnaround times and published prices for the full directory are compared on the legionella testing labs page. Sampling is not a substitute for day-to-day control: a clear result records what was found at that outlet on that day, it never certifies a system as safe, and it sits alongside the routine checks in your written scheme of control, not instead of them.

Building types in Aberdeen

Different building types have specific legionella considerations. Browse the guides most relevant to Aberdeen premises:

• Landlords and rental properties
• Offices
• Care homes
• Hotels
• Schools
• Dental practices
• All building types